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Glastar B41 8" Variable Speed Lap Machine

5 out of 5 stars (4 Customer Reviews)

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All prices include VAT.

Ref: US84642019
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Product Information
8" Diameter Professional Flatlap Grinding & Polishing Station

Diamonds provide the fastest, most economical way of grinding glass and stone. Now, it is possible to grind and polish all on one machine and change media in 2 or 3 seconds.

If ordered with discs the following are included:

  • 1 x 8" 120 grit Genesis diamond roughing pad
  • 1 x 8" 400 grit Genesis diamond smoothing pad
  • 1 x 8" diamond resin pre-polish pad
  • 1 x 8" polyester felt polish pad
  • 4 x 8" steel base plates

This system is ideal for grinding/polishing straight edges, and outside curves. Grinding discs are held in place magnetically. This unique mounting arrangement allows use of the total grinding surface without being concerned about the work piece striking a mounting screw. It takes only 2 or 3 seconds to change discs.

Buy today and we will upgrade you to a Bronze Discount customer, with 5% off future orders.

Key Features:

  1. Magnetic disc holder. The discs are held in place by a magnetic head. This means that there is no protruding centre screw, so that the complete surface of the disc is free to be used. Discs can be changed in a few seconds.
  2. Motor: 1/3 HP, industrial quality
  3. Splash guard
  4. Flexible coolant feed pipe
  5. Housing - Moulded structural foam, 13mm thick, rust proof.
  6. Base plate 5mm thick, heavy steel. Ensures vibration - free operation.
  7. Electronic speed control-Speed variable from 0 - 1725 RPM.


  • Drive shaft Mounting: Magnetic hub with 1/2" locating nipple
  • Rotation: Anti-clockwise
  • Drive: Direct drive Variable speed motor 1/3HP
  • Voltage: 50Hz / 230V
  • Current: 230V / 1.25A
  • Speed: 0 - 1725 RPM
  • Machine Weight: 16kg
  • Dimensions: 33 x 39 x 24 cm

Other Information:

Two year parts and labour warranty.

Ships free to any address in mainland UK. Other destinations by quotation.

Please note the pump, discs and cerium oxide (when polishing) are required to operate the machine. They are available separately as you may already have some or all of these in your studio.

Please note this product may take up to 4-8 weeks to be delivered unless it shows we have them in stock (in which case normal delivery times apply).

Personalised discounts are restricted on this product.

Product Reviews
5 out of 5 stars
5 out of 5 stars Wednesday 10 February, 2016 By Branko Brelih
This is a very efficient coldworking tool that allows me to try many new glass projects and techniques. It also helps me easily correct some shape- and surface related problems that would have previously spoil my work.

The machine is surprisingly silent for all the power it provides. Only the 120 grit makes some noise, something comparable to a washing machine.

On the downside there are few minor things worth mentioning. The instructions manual says nothing about maintenance (like cleaning) and how to glue diamond disks to the metal base disks (it matters to which side of the base you glue the sticker on and it needs to be centred exactly, to avoid vibrations).

The water piping fittings are not compatible* with european standards, neither are the electric plugs. The same goes for the optional water pump that comes with a rather long 10 m cable, even if it is meant to be plugged into the extension socket provided right there on the back side of the grinder. *WARM GLASS NOTE: The machine and the pump are supplied with a UK plugs which meet European Standards the fittings for the water are high pressure water fittings and the pump is supplied with pipe adaptors so it can be used out of the box without the need for any other fittings. The length of the cable on the pump is to allow the plug to be positioned well away from the water for safety reasons.
5 out of 5 stars Friday 09 October, 2015 By Sue Martin Welcombe Glass Art
Cold working is one of the most important tasks when working with warm glass. I was convinced that I could manage without one of these, however, now that I have invested in my Glastar variable speed lap machine I can honestly say that it is well worth the investment. It produces a great finish on the edges of my work with so much less effort. Thanks very much to Warm Glass for delivering this in super fast time once my decision was made.
5 out of 5 stars Sunday 05 May, 2013 By Robyn Coetzee - See all my reviews
I recently purchased one of these and agree with Jade regarding the purchase of a 70 grit disc to add to your collection but remember to buy a steel disc too! Take care when initially setting up your discs as you need to make sure you mount the discs onto the correct side of your steel plate base. The 8inch is good for me as I only plan to make small pieces. I guess if you have the space and the money the larger one would be best.
5 out of 5 stars Friday 27 January, 2012 By Jade Butler
I decided to invest in one of these after I used one on a class at Warm Glass, I don't regret it (despite the cost).

It's very powerful and the only warning I would give is that I suggest that you get the 70 grit disc as well as you'll probably need the extra ooomph from the coarser grit.

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Registered office: 5 Havyat Park, Wrington, Bristol, BS40 5PA, UK
Company Reg No. 5365166. VAT No. 791350132
© Warm Glass UK, 2015-2018
Registered office: 5 Havyat Park, Wrington, Bristol, BS40 5PA, UK
Company Reg No. 5365166. VAT No. 791350132